Recent discovery may solve 300-year-old cold case

German construction workers came across an incredible find that not only bears historical significance, but also may solve a 300-year-old cold case.

They found remains they believe belong to the body of Philip Christoph Königsmarck, the infamous lover of 17th century royal Princess Sophia Dorothea.

Their love story is a tale of passion and secrecy that was cut short just before he and Dorothea planned to run away from her oppressive husband, Georg Ludwig.

Historians have never been positive about what happened to Königsmarck -- it has just been assumed that Ludwig had him killed.

According to reports made after he went missing, there were a few placing where his body may have been found.

One of them was the outskirts of the Germany's Leine Castle -- the place where he reportedly last saw Dorothea.

Lund University researchers will perform a DNA test to determine for certain if the remains belong to the slain lover.

Though getting answers won't give their love story a "happily ever after," it will give them an ending -- one listeners have always longed for.

After Königsmarck disappeared, Dorthea vanished. She was reportedly imprisoned for the rest of her life by her jealous husband, who then ascended to the throne of Great Britain and took the name King George I.

See other cases like this:

10PHOTOS

Notable cold cases and unsolved murders throughout history

See Gallery

Notable cold cases and unsolved murders throughout history

In June 1893 Lizzie Borden stood trial, later acquitted, for killing her father and stepmother with an ax.

(Photo via Bettmann/Getty Images)

Foreboding Kingsbury Run, shunned by the timid as the legend of its murders has grown, is indicated on this map by dots locating 10 of the 11 torso murders which have occurred there since Sept. 23, 1935. Police, delving into the lives of the mad murderer's victims, hope to uncover clues which will end the periodic killings. Discovery of photo negatives in the belongings of Edward Andra Ssy, first victim, show Andra Ssy in a strange room which, if identified, may provide a live lead, police believe. As the map shows, the murderer departed only twice from his custom of assailing victims in Kingsbury Run or adjacent Cuyahoga river valley.

(Bettmann via Getty Images)

Bucks Row, now Durward Street, east London, where the body of Mary Ann Nichols, victim of Jack the Ripper, was found lying across the gutter.

U.S. labor leader Jimmy Hoffa is photographed at the Greater Pittsburgh Airport, Pennsylvania in this April 12, 1971 file photograph. Hoffa was switching planes from San Francisco, and was returning to the federal prison in Allenwood, Pennsylvania. Hoffa was let out of prison to visit his wife, who had been hospitalized with heart problems. FBI teams on May 25, 2006 sifted by hand through dirt from a chest-deep hole in the ground in an intense search for the body of Jimmy Hoffa three decades after his disappearance. Hoffa was last seen outside a Detroit-area restaurant where he was to meet New Jersey Teamsters' boss Anthony "Tony Pro" Provenzano, a member of the Genovese crime family, and a local Mafia captain, Anthony "Tony Jack" Giacalone. Hoffa was declared dead in 1982, and numerous books about his life have pinned his disappearance on mobsters who murdered him because they did not want him interfering with their close ties to the union.

(REUTERS/Jerry Siskind)

The site where 6 year old JonBenet Ramsey was killed in Boulder, Colorado, 1996.

Los Angeles Police detectives released this composite drawing March 27 of the man they believe killed rap star Notorious B.I.G. in Los Angeles recently. The suspect, a black man in his early 20's with close-cropped hair, was wearing a bow-tie the night of the drive-by killing. Investigators have set up a toll free number for the public to call with any information about the suspect.
NOTORIOUS BIG

Donna Norris poses next to a photo of her daughter Amber Hagerman, January 4, 2011, who was kidnapped 15 years ago while riding a bicycle near Norris mother's home in Arlington, Texas on January 13, 1996. (Richard W. Rodriguez/Fort Worth Star-Telegram/MCT via Getty Images)